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Finding the Fourth Proportional to 70,445.40, 105,633.54 and 34,865.61

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Solution

The fourth proportional to 70,445.40, 105,633.54 and 34,865.61 is: 52,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,445.40 : 105,633.54 = 34,865.61 : x
  2. Step 2: Convert to fraction form
    70,445.40/105,633.54 = 34,865.61/x
  3. Step 3: Cross multiply
    70,445.40x = 105,633.54 × 34,865.61
  4. Step 4: Simplify right side
    70,445.40x = 3,682,977,808.56
  5. Step 5: Solve for x
    x = 3,682,977,808.56/70,445.40
  6. Step 6: Final answer
    x = 52,281.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.